/*!
 * @license
 * Copyright 2019 Alfresco, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { Pipe, PipeTransform } from '@angular/core';
import { EntityProperty } from '../../api/types';
import { VariablesService } from '../variables.service';

@Pipe({ name: 'variableExpressionLanguage' })
export class VariableExpressionLanguagePipe implements PipeTransform {

    constructor(private variablesService: VariablesService) { }

    transform(variable: string | EntityProperty): string | null {
        if (!variable) {
            return null;
        }

        let primitiveType = variable;
        if (typeof variable === 'string') {
            primitiveType = this.variablesService.getPrimitiveType(variable);
        } else {
            primitiveType = this.variablesService.getVariablePrimitiveType(variable);
        }

        return primitiveType === 'json' ? 'json' : null;
    }
}
